Air filter



FIG. 1 is a front view of the design according to a first embodiment of the invention.

FIG. 2 is a back view of the design according to a first embodiment of the invention.

FIG. 3 is a top view of the design according to a first embodiment of the invention.

FIG. 4 is a bottom view of the design according to a first embodiment of the invention.

FIG. 5 is a right view of the design according to a first embodiment of the invention.

FIG. 6 is a left view of the design according to a first embodiment of the invention.

FIG. 7 is a front, right, and top perspective view of the design according to a first embodiment of the invention.

FIG. 8 is a front, left, and top perspective view of the design according to a first embodiment of the invention.

FIG. 9 is a back, right, and bottom perspective view of the design according to a first embodiment of the invention.

FIG. 10 is a back, left, and bottom perspective view of the design according to a first embodiment of the invention.

FIG. 11 is an enlarged, partial view of the front, right, and top perspective view of the design according to a first embodiment of the invention.

FIG. 12 is an enlarged, partial view of the front, left, and top perspective view of the design according to a first embodiment of the invention.

FIG. 13 is a cross-section of the design taken along line 13—13 as shown in FIG. 1 according to a first embodiment of the invention.

FIG. 14 is a cross-section of the design taken along line 14—14 as shown in FIG. 1 according to a first embodiment of the invention.

FIG. 15 is a front view of the design according to a second embodiment of the invention.

FIG. 16 is a back view of the design according to a second embodiment of the invention.

FIG. 17 is a top view of the design according to a second embodiment of the invention.

FIG. 18 is a bottom view of the design according to a second embodiment of the invention.

FIG. 19 is a right view of the design according to a second embodiment of the invention.

FIG. 20 is a left view of the design according to a second embodiment of the invention.

FIG. 21 is a front, right, and top perspective view of the design according to a second embodiment of the invention.

FIG. 22 is a front, left, and top perspective view of the design according to a second embodiment of the invention.

FIG. 23 is a back, right, and bottom perspective view of the design according to a second embodiment of the invention.

FIG. 24 is a back, left, and bottom perspective view of the design according to a second embodiment of the invention.

FIG. 25 is an enlarged, partial view of the front, right, and top perspective view of the design according to a second embodiment of the invention.

FIG. 26 is an enlarged, partial view of the front, left, and top perspective view of the design according to a second embodiment of the invention.

FIG. 27 is a cross-section of the design taken along line 27—27 as shown in FIG. 15 according to a second embodiment of the invention.

FIG. 28 is a cross-section of the design taken along line 28—28 as shown in FIG. 15 according to a second embodiment of the invention.

FIG. 29 is a front view of the design according to a third embodiment of the invention.

FIG. 30 is a back view of the design according to a third embodiment of the invention.

FIG. 31 is a top view of the design according to a third embodiment of the invention.

FIG. 32 is a bottom view of the design according to a third embodiment of the invention.

FIG. 33 is a right view of the design according to a third embodiment of the invention.

FIG. 34 is a left view of the design according to a third embodiment of the invention.

FIG. 35 is a front, right, and top perspective view of the design according to a third embodiment of the invention.

FIG. 36 is a front, left, and top perspective view of the design according to a third embodiment of the invention.

FIG. 37 is a back, right, and bottom perspective view of the design according to a third embodiment of the invention.

FIG. 38 is a back, left, and bottom perspective view of the design according to a third embodiment of the invention.

FIG. 39 is an enlarged, partial view of the front, right, and top perspective view of the design according to a third embodiment of the invention.

FIG. 40 is an enlarged, partial view of the front, left, and top perspective view of the design according to a third embodiment of the invention.

FIG. 41 is a cross-section of the design taken along line 41—41 as shown in FIG. 29 according to a third embodiment of the invention.

FIG. 42 is a cross-section of the design taken along line 42—42 as shown in FIG. 29 according to a third embodiment of the invention.

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for an air filter, as shown and described. 